Burglar-alarm



(No Model.) 7

M. J. NEWI-IOUSE.

BURGLAR ALARM. No. 425,045. Patented Apr. 8, 1890.

ill/111117111 q vflimcoow I 844042441110; I

1 UNITED STATES PATENT OFFICE.

MILFORD J. NEWI-IOUSE, OF ONEIDA, NEV YORK.

BU RGLAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 425,045, dated April 8,1890.

Application filed J 1111c 3, 1889. Serial No. 313,000. (No model.)

To all whom it may concern.-

Be it known that I, MILFORD J. NEWHoUsE, of Oneida, county of Madison,in the State of New York, a citizen of the United States, have inventedcertain new and useful Improvements in Burglar-Alarms, of which thefollowing is a specification, reference being had to the accompanyingdrawings, in which- Figure 1 is a front plan view. Fig. 2 is a frontelevation of the same suspended. Fig. 3 is a transverse section on aline w as, Fig. 2. Fig. at is a like view 011 the line y y, Fig. 2.

My invention relates to bu rglar-alarms, and especially to those whichare portable, adapted to be carried in the pocket, and which can. bereadily attached to any door or window, and which operate to explode acap, a fulminate, or other detonator.

The object of my invention is to produce such a burglar-alarm.

My invention consists in the several novel features of construction andoperation hereinafter described, and specifically set forth in the claimannexed.

It is constructed as follows: A is the body, of rectangular form, andgrooved in one of its staves longitudinally for nearly its whole length,forming a shoulder 1 at the top of the groove. end are flanged pieces 2,projecting inwardly. At the top end I form an eye 3, in which I secure acord 4, and 5 is a tack of either the form shown in the drawings or ofany desired construction.

B is the male portion, consisting of a piece of metal of a form and sizeto fit the. groove in the body A, fitting therein loosely, and providedat its upper end with a nipple 6, upon which Iplace a cap 7, or otherdetonator, and terminating at its lower end with an enlargement or head8.

It will be observed that the throw of the striking-piece B issubstantially equal to the distance between the cap and the shoulder 1.This device is suspended by inserting the point of the tack into theupper sash of a window or into the casing above the top of the door, sothat whenever the door is opened On either side adjacent to the lowerashort distance or either sash ofa window is moved vertically a littleways the strain upon the cord will pull out the tack, the implement willdrop, and, striking either the floor or the window-sill upon the head 8,the concussion or momentum will drive the body A downward and willforcibly strike the shoulder 1 against the cap and explode it. It willbe observed, also, that the tack 5,being provided with a point 9 and ashoulder 10, when the point is inserted it can only be inserted up tothe shoulder, and that when a window, for instance, is raised thesash-rail will encounter the outer arms 11 and will press against it asa lever, and,in conjunction with the shoulder 10, will withdraw thepoint of the tack.

I am aware of the tubular alarm patented to H. T. Helmbold January 6,1885, No. 310,421, in which a screw-plug must be removed to insert thedetonator and then again screwed in; but that is not my invention,because my construction embodies no removable plug, but is always opento permit the detonator to be placed upon the nipple.

What I claim is A burglar-alarm consisting of a rectangular body havingan open longitudinal groove in one face for nearly its whole length andprovided with lips projecting along a portion of the edges of the groovewhen folded over and opening out through the lower end and terminatingat the top with a shoulder, in combination with a bar retained in saidgroove by the lips turned over onto it and fitting loosely therein andhaving a head shouldered to engage with the upper end of the lips andprovided with a nipple to receive a cap upon the top of the head andhaving a weight upon the lower end of the bar larger than said groove,and means for suspending the body, as set forth.

In witness whereof I have hereunto set my hand this 30th day of April,1889.

MILFORD J. NEYVHOUSE.

In presence of H. P. DENISON, O. W. S ITH.

